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CVE-2018-8956

CVE-2018-8956

This page contains facts from public vulnerability sources. Check the original advisory before updating.

ntpd in ntp 4.2.8p10, 4.2.8p11, 4.2.8p12 and 4.2.8p13 allow remote attackers to prevent a broadcast client from synchronizing its clock with a broadcast NTP server via soofed mode 3 and mode 5 packets. The attacker must either be a part of the same broadcast network or control a slave in that broadcast network that can capture certain required packets on the attacker's behalf and send them to the attacker.

CVSS 5.3 · Medium · EPSS 3.1% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • n/a

    Versions
    • n/a: Affected

    No fix published

  • ntp Debian:11

    Affected ranges
    • ECOSYSTEM: < 1:4.2.8p14+dfsg-1

    Update to 1:4.2.8p14+dfsg-1

  • ntp Ubuntu:Pro:14.04:LTS

    Versions
    • 1:4.2.6.p5+dfsg-3ubuntu2
    • 1:4.2.6.p5+dfsg-3ubuntu2.14.04.1
    • 1:4.2.6.p5+dfsg-3ubuntu2.14.04.2
    • 1:4.2.6.p5+dfsg-3ubuntu2.14.04.3
    • 1:4.2.6.p5+dfsg-3ubuntu2.14.04.5
    • 1:4.2.6.p5+dfsg-3ubuntu2.14.04.6
    • 1:4.2.6.p5+dfsg-3ubuntu2.14.04.7
    • 1:4.2.6.p5+dfsg-3ubuntu2.14.04.8
    • 1:4.2.6.p5+dfsg-3ubuntu2.14.04.10
    • 1:4.2.6.p5+dfsg-3ubuntu2.14.04.11
    • 1:4.2.6.p5+dfsg-3ubuntu2.14.04.12
    • 1:4.2.6.p5+dfsg-3ubuntu2.14.04.13
    • 1:4.2.6.p5+dfsg-3ubuntu2.14.04.13+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ntp Ubuntu:16.04:LTS

    Versions
    • 1:4.2.6.p5+dfsg-3ubuntu8
    • 1:4.2.6.p5+dfsg-3ubuntu8.1
    • 1:4.2.6.p5+dfsg-3ubuntu9
    • 1:4.2.8p4+dfsg-3ubuntu1
    • 1:4.2.8p4+dfsg-3ubuntu2
    • 1:4.2.8p4+dfsg-3ubuntu3
    • 1:4.2.8p4+dfsg-3ubuntu4
    • 1:4.2.8p4+dfsg-3ubuntu5
    • 1:4.2.8p4+dfsg-3ubuntu5.1
    • 1:4.2.8p4+dfsg-3ubuntu5.2
    • 1:4.2.8p4+dfsg-3ubuntu5.3
    • 1:4.2.8p4+dfsg-3ubuntu5.4
    • 1:4.2.8p4+dfsg-3ubuntu5.5
    • 1:4.2.8p4+dfsg-3ubuntu5.6
    • 1:4.2.8p4+dfsg-3ubuntu5.7
    • 1:4.2.8p4+dfsg-3ubuntu5.8
    • 1:4.2.8p4+dfsg-3ubuntu5.9
    • 1:4.2.8p4+dfsg-3ubuntu5.10
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ntp Ubuntu:Pro:18.04:LTS

    Versions
    • 1:4.2.8p10+dfsg-5ubuntu3
    • 1:4.2.8p10+dfsg-5ubuntu4
    • 1:4.2.8p10+dfsg-5ubuntu5
    • 1:4.2.8p10+dfsg-5ubuntu6
    • 1:4.2.8p10+dfsg-5ubuntu7
    • 1:4.2.8p10+dfsg-5ubuntu7.1
    • 1:4.2.8p10+dfsg-5ubuntu7.1+esm1
    • 1:4.2.8p10+dfsg-5ubuntu7.1+esm2
    • 1:4.2.8p10+dfsg-5ubuntu7.2
    • 1:4.2.8p10+dfsg-5ubuntu7.2+esm1
    • 1:4.2.8p10+dfsg-5ubuntu7.3
    • 1:4.2.8p10+dfsg-5ubuntu7.3+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ntp Ubuntu:Pro:20.04:LTS

    Versions
    • 1:4.2.8p12+dfsg-3ubuntu2
    • 1:4.2.8p12+dfsg-3ubuntu3
    • 1:4.2.8p12+dfsg-3ubuntu4
    • 1:4.2.8p12+dfsg-3ubuntu4.20.04.1
    • 1:4.2.8p12+dfsg-3ubuntu4.20.04.1+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ntp Ubuntu:22.04:LTS

    Versions
    • 1:4.2.8p12+dfsg-3ubuntu6
    • 1:4.2.8p15+dfsg-1ubuntu1
    • 1:4.2.8p15+dfsg-1ubuntu2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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